Drieaz DefendAir HEPA 500 User manual

07-01496D F284-230V UK/EU 1 Legend Brands Europe Holdings Ltd.
Owners Manual
DefendAir®HEPA 500 Air Scrubber
Model F284-230V UK/EU
Legend Brands Europe Holdings Ltd.
22 Plover Close, Interchange Park, Newport Pagnell, MK16 9PS
Tel: [phone] Fax: [phone] LegendBrandsEurope.com
The DefendAir HEPA 500 is a portable filtration system that draws air in from the surrounding environment and
passes it through an advanced filtration system. The unit removes airborne particles such as dust, mold spores,
pollen, pet dander and other debris, and can also be configured to remove odors.
Patents: http://www.LBpatents.com
READ AND SAVE THESE INSTRUCTIONS
WARNING! Do not alter or modify your HEPA 500 in any
way. Use only replacement parts authorized by Legend
Brands Europe Holdings Ltd. Modifications or use of
unapproved parts could create a hazard and will void your
warranty. Contact your authorized Dri-Eaz distributor for
assistance.
WARNING! Electric shock hazard, rotating fan,
hot surface hazards. Unplug unit before opening
cover for cleaning or servicing. Unit must be
grounded.
•Inspect the power cord before use. If cord is damaged, do
not use. Always grasp the plug (not the cord) to unplug.
•Plug cord firmly into base of unit first, then into electrically
grounded outlet. Do not use adapter. Never cut off third
prong. Do not use an extension cord.
•To keep power cords from pulling the unit, be sure to
insert the plugs firmly and engage the cords in the cord
clips attached to back of unit.
•Do not attempt to repair the unit. For Authorized Service
Centers, contact Dri-Eaz.
If the power cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in
order to avoid a hazard.
INTRODUCTION
The HEPA 500 uses a combination of airflow and filtration to
create cleaner air. The unit draws air through two types of
filters: a pre-filter and a HEPA filter. The first stage of filtration
captures larger particles. When fitted with the optional
Activated Carbon Filter, the first stage can also adsorb a wide
variety of odor compounds. The second stage of filtration
captures much smaller particles down to 0.3 microns.
BEFORE YOU BEGIN
Warranty service
If you determine service is required, have your equipment
model, serial number and original proof of purchase available
and call your distributor for assistance with obtaining a return
material authorization (RMA).
WARNING
Air inlet with
cover plug
removed. Fits
10 in. ducting.
Change
HEPA filter
light
Filtered air
outlet. Fits
8 in. ducting.
Fig. 1: Parts Identification
Speed control

07-01496D F284-230V UK/EU 2 Legend Brands Europe Holdings Ltd.
HEPA 500 APPLICATIONS
Water Damage
Use of the HEPA 500 within the affected area will reduce
particle levels during the restoration process. In a standard
Category 1 water damage situation, place the HEPA 500 in the
middle of the affected area. Category 2 and 3 water damage
situations may require negative pressure containment and
other precautions. Only professionals with the appropriate
training should use containment techniques.
Mold Remediation
Most mold remediation projects require containment.
Containment prevents the spread of mold spores and other
bioaerosols. Always use the optional DOP Filter (F415) when
using the HEPA 500 to ensure first-pass filtration in a
containment setup. Only a professional with the appropriate
training should attempt mold remediation.
Odor control
When used with the optional Activated Carbon Filter (F397),
the HEPA 500 can effectively remove many odors from an
indoor air environment, including volatile organic compounds
(VOCs), food odors, fumes from paint and paint thinners,
sewer odors, and many others.
Other uses include fire damage restoration, dust control, odor
control and sewage remediation. These are specialized
applications and require professional training. For more
information about using the HEPA 500 in these situations,
contact Dri-Eaz.
WARNING: BREATHING HAZARD
When using the HEPA 500 in a containment area,
turn off all sources of power to open combustion
appliances such as fireplaces, boilers, furnaces,
water heaters and HVAC systems to avoid the risk
of backdrafting deadly carbon monoxide fumes.
CONTROLS AND OPERATING
INSTRUCTIONS
Variable Speed Control knob
Increase the fan speed by turning the knob clockwise. Fan
speed can be adjusted between 250 and 500 CFM.
Change Light
The change light illuminates when you need to change the
HEPA filter.
Setup
1. Unwrap the cord wrap completely
2. Place the HEPA 500 upright (vertical with handle at the top)
3. Plug in to a standard 230 volt outlet. Each HEPA 500 needs
1.5 amps to operate.
4. To switch the unit on, locate the control panel and turn the
variable speed switch clockwise (Fig. 1). Then select either a
maximum (500 CFM) or down to a minimum (250 CFM) airflow
rate. To maintain the optimal air change rate, consult the IICRC
S520 standards, 10.3.1.
Special Features
Ducting options
The HEPA 500 has a standard ductable 12 in. inlet and a
ductable 8 in. outlet, suitable for use with rigid and layflat
ducting. See “Ducting Options,” p. 4, for descriptions of the
ducting types available from Dri-Eaz.
Negative Pressure Setup
The HEPA 500 can be configured to set up a negative
pressure containment area. Install the HEPA 500 outside the
containment area to draw air out. Only professionals with the
appropriate training should set up negative pressure
containment areas.
Options for Storage and Operation
The HEPA 500 can be stacked up to two high for storage or
operation. The handle of one unit fits snugly into the bottom of
a second unit. The unit can also be operated on its back, with
the outlet facing upward.
For storage, HEPA 500s may be stacked horizontally or
vertically. Secure the unit properly when transporting.
About the filters
The HEPA 500 uses two types of disposable filters: prefilters
and a HEPA filter. The prefilter section can be fitted with one or
two filters. These prefilters are designed to capture larger
airborne particles and to control odors, depending on the filter
selected. The HEPA section (Position 3), is fitted with a filter
designed to capture 99.97% of smaller particles down to 0.3
Fig. 2: Replacing the prefilters
Release the four spring clips (one shown here
and lift off cover to access the prefilter(s).
Fig. 3: Replacing the HEPA filter
Remove the eight bolts and tabs (one shown here)
and lift off cover to access the HEPA filter.

07-01496D F284-230V UK/EU 3 Legend Brands Europe Holdings Ltd.
microns. See Fig. 4, Filter Positions, and “HEPA 500 Filter
Configurations,” p. 4, for details.
Filters should be replaced whenever they show visible
accumulation of dust. For environments with a high volume of
aerosolized particles, we recommend the use of two prefilters
to extend the life of the HEPA filter.
Always replace the HEPA filter promptly when the Filter
Change Light illuminates. Do not attempt to vacuum and reuse
the HEPA filter.
NOTICE: When using the HEPA 500 on remediation
projects, the filters should be changed and properly
disposed of after every job.
Replacement filters are available from your Dri-Eaz
distributor.
MAINTENANCE
WARNING! ELECTRIC SHOCK HAZARD.
Disconnect from electrical supply prior to servicing
or cleaning.
WARNING! BREATHING HAZARD. Always wear
an appropriate NIOSH-approved respirator and
personal protective equipment when removing or
replacing filters, or when cleaning the HEPA 500.
Before each use
1. Inspect the electrical cord for damage, and do not use the
unit if you find any fraying, cuts, etc. Contact your local Dri-Eaz
distributor for service.
As Needed
Clean housing and impeller. Lay the the unit on its back and
loosen the four filter cover clamps (Fig. 2). Lift off the filter
cover and remove any prefilters present. Use a 3/8 in. wrench
to loosen the 8 retaining tab nuts holding the inlet panel in
place. Slide the retaining tabs outward away from the center of
the inlet panel, and lift off the inlet panel.
Always replace the HEPA filter promptly
when the Filter Change Light illuminates. Do
not attempt to vacuum and reuse the HEPA
filter.
Filters
The prefilters should be inspected regularly
and changed whenever dust has visibly
accumulated on the filter surface.
The HEPA filter should be changed
whenever the change filter light comes on.
See “HEPA 500 Filter Configurations,” p. 4,
for the available filter combinations.
Water damage restoration
applications
Before each use
Look for accumulated dust and dirt that
could restrict airflow through the filter into
the unit. If any is visible, change out the pre-
filter.
Remediation applications
• Wear NIOSH-approved protective gear when changing filters.
• Change filters after every remediation job.
• Change HEPA filter when the filter indicator light comes on.
• Dispose of used filters according to local regulations.
• Replace both the prefilters and HEPA filter to prevent cross-
contamination.
• Clean the unit thoroughly (vacuum and damp wipe per IICRC
S520, 10.11) after each job before removing it from the
containment area to avoid cross-contamination. Pay particular
attention to the area around the air intake. Let the unit dry
before installing clean filters.
Filter access instructions
To inspect and change the prefilters, lay the unit flat on its
back. Lift and release the four latches on the outlet panel and
lift off the panel. Inspect and/or replace the prefilters as
necessary.
After ensuring that the prefilter(s) are properly seated, replace
the outlet panel, and re-engage the latches. The HEPA 500 is
now ready to return to service.
To change the HEPA filter, lay the unit flat on its back, then
use a 3/8 in. wrench to loosen the 8 retaining tab nuts holding
the inlet panel in place. Slide the retaining tabs outward, away
from the center of the inlet panel, and lift off the inlet panel.
Lift out the used HEPA filter and replace it with a new one. Do
not clean and reuse the HEPA filter.
After making sure that the filter is properly seated, replace the
inlet panel, slide the tabs back into place, and tighten the nuts.
Do not overtighten. The HEPA 500 is now ready to return to
service.
About DOP first-pass filtration efficiency
DOP (Dispersed Oil Particulate) first-pass efficiency refers to a
standard procedure for testing the effectiveness of HEPA
filtration. The DOP test introduces a dense cloud of extremely
fine particulates into the filter under controlled conditions. DOP
verification is required in certain settings.
The addition of the DOP filter (F415) makes the HEPA 500 a
high efficiency three-stage air filtration unit suitable for any job
Fig. 4: Filter Positions
Postiion 3
(HEPA filter)
Filter cover
HEPA filter
housing
Air inlet
Postion 2:(optional
second refilter)
Postion 1.
(prefilter)
Airflow direction
WARNING

07-01496D F284-230V UK/EU 4 Legend Brands Europe Holdings Ltd.
that requires first-pass HEPA filtration.
Install the DOP filter between the standard pre-filter and the
HEPA primary filter. For odor control, the Activated Carbon
Filter may be used together with the DOP filter. Simply replace
the pre-filter with the carbon filter.
HEPA 500 FILTER CONFIGURATIONS
Filtering requirements PREFILTERS
(Positions 1 & 2)
HEPA
(Position 3)
Clean water loss air scrubbing. For a relatively
clean environment. n/a 30% Prefilter (F271)
HEPA filter
(F321)
Standard air scrubbing. For environments with
higher particle loads, such as construction or
remodeling sites.
10% Prefilter
(F270)
30% Prefilter
(F271)
HEPA filter
(F321)
First-pass efficiency air filtration. For use with
a negative air setup during remediation of high
risk contaminants and/or when DOP testing is
required. See “About DOP Frst-Pass Filtration
Efficiency,” p. 3.
30% Prefilter
(F271)
DOP Prefilter
(F415)
HEPA filter
(F321)
Odor control and air filtration. For removing
volatile organic compounds (VOCs), food odors,
fumes from paint and paint thinners, sewer
odors, and many other noxious odors.
Activated Carbon Filter
(F397)
30% Prefilter
(F271)
HEPA filter
(F321)
FILTER DESCRIPTIONS
10% Prefilter (F270). Synthetic fiber filter media rated at 10% efficiency. Captures the largest particles to help extend the life of the
higher efficiency filters inside. 30% Prefilter (F271). Synthetic fiber filter media rated at 30% efficiency. Captures larger particles to help
extend the life of the HEPA filter.
Activated Carbon Filter (F397). The use of activated carbon in this filter allows the removal of a wide variety of compounds, including
volatile organic compounds (VOCs), food odors, fumes from paint and paint thinners, sewer odors, and many other noxious odors.
Combining activated carbon filtration with HEPA filtration is especially effective in removing airborne soot particles and the odors they
create.
DOP Prefilter (F415). Use the DOP filter to ensure laboratory-rated performance for sensitive jobs requiring first-pass HEPA filtration.
HEPA filter (F321). The HEPA filter has an efficiency rating of 99.97% against 0.3 micron oily aerosol particles.
DUCTING OPTIONS
12 in. rigid ducting (Sto & Go Ducting, F405) for inlet.25 feet of collapsible 12-inch ducting with a built-in protective case. Connect
one or more sections. Packs into convenient carry case. Order from your Dri-Eaz distributor.
8 in. layflat ducting (F268) for outlet.Strong 4-mil poly ducting. 13 in. wide when flat; expands to 8.3 in. diameter when inflated. 500
feet per roll. Cut to length.
Order replacement filters from your Dri-Eaz distributor.

LIRE ET CONSERVER CES INSTRUCTIONS
07-01496D F284-230V UK/EU 5 Legend Brands Europe Holdings Ltd.
TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
Unit does not operate
1. No power to machine
2. Switch not turned on
3. No power at supply outlet
4. GFCI tripped
1. Plug in the unit; check power at outlet
2. Turn on the switch
3. Reset supply circuit breaker/GFCI
4. Reset unit circuit breaker/GFCI
Change light illuminated
1. Primary (HEPA) filter is full
2. Air intake restricted by ducting
bends, kinks, or excessive
length
1. Replace the HEPA filter
2. Eliminate bends/kinks in ducting; reduce ducting
length.
For any problems not described here, please contact your local distributor for assistance.
WARNING: Because federal, provincial and local laws and regulations have varying requirements for the
application, testing and general use of equipment on asbestos abatement projects, Legend Brands, Inc., cannot
warrant the use of any product we manufacture for asbestos abatement. Contractors performing abatement work should
evaluate tools, equipment and procedures in light of their local regulatory requirements, and comply with those
requirements.
SPECIFICATIONS
Model HEPA 500 (F284-230V)
Weight 19.9 kg | 44 lbs.
Dimensions
(D × W × H)
62.5 × 66.5 × 46.2 cm
24.6 × 26.2 × 18.2 in.
Duct sizes Intake: 12 in. Outlet: 8 in.
Power 1.5A, 230V, 50 Hz
Air movement 331–431 CFM
Filter system Up to two prefilters and one HEPA filter.
Controls On/Off switch, variable speed control knob
Power cord length 7.63 m | 25 ft.
Construction Rotomolded polyethylene housing
Safety CE listed
Specifications are subject to change without notice. Some values
may be approximate.